1 Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan.
2 Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan misu@med.tohoku.ac.jp.
3 Department of Diagnostic Radiology, Tohoku University School of Medicine, Sendai, Miyagi, Japan.
4 Division of Image Statistics, Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan.
5 Department of Neurology, South Miyagi Medical Center, Ogawara, Miyagi, Japan.
6 Department of Neurology, National Hospital Organization Yonezawa Hospital, Yonezawa, Yamagata, Japan.
7 Department of Neurology, Tohoku Medical and Pharmaceutical University, Sendai, Miyagi, Japan.
8 Department of Multiple Sclerosis Therapeutics, Fukushima Medical University, Fukushima, Fukushima, Japan.
9 Department of Multiple Sclerosis & Neuromyelitis Optica Center, Southern Tohoku Research Institute for Neuroscience Southern Tohoku General Hospital, Koriyama, Fukushima, Japan.